Shade roller



Oct. 13, 1931. J. K. TOMLINSON 1,827,444

SHADE ROLLER Original Filed Feb. 13, 1928 2.. Fig. 6 is a perspective Patented O t. 13,1931

vJOHN- I?TqlimIl Soiv,

el minationffiiearebuaiiis, 1928. seria i e 3 a f ftlier En of f f I 'zMy invention relates to. shade, rollers. One of'the objects :of my invention is to p v 7 provide .anrimproved shade roller, construe -tion whichiwill .preventaccidental release of c fithe shade roller; Y1 v 'Afurtheriobject of my invention is to provide a shade roller .construction of the char acterindicate'd, which will be cheapto manufacture, and durable and eificientin use.

scription and claims. V In the drawings in which a'n embodiment of myinvention-is shown,

Figure-l 's an elevat'onal -viewlof ;a shade rolleit 'f p a ff Fig. 2 is an axial section thereof; v Fig. 3 is a perspective view of'part of the pawlcarrier housing; s v Fig. 4 is a; perspective VlGW' of thepawl carrier-and pawls; I i g 5 h Fig. 5 is a perspective view of a sheet metal stamping which provides a pawl retainer, a bracketengaging portion, abearing portion, and a prong portion; r i

view of the other. part of the pawl carrier housing;

Fig. 7 is a section on the line 7 -7 of Fig.2 I Fig. 8 is an elevation of the pawl carrier housing assembled;

Fig. 9 is a perspective view of one of the pawls; and v 1 l I {Fig 10'is a perspective viewshowinga, slightly difi'erent form of bearing.

Referring to; the drawings in detail the construction" shown therein comprises a wooden roller 1 to which the shade is attached pawl controlledispring means at one v the" other half. Loops maybe str'uck up end of the roller for controlling rotation of the roller, and a spring pressed pin'2 at the; other end of the'roller for engaging a sup-f porting bracket. i V The pawl controlled spring means for controlling rotation of the shade roller com-.

rise the stamping shown in Fig. 5 which is.v formed of sheet metal doubled upon itself to.v provide various portions performing varii ous functions,a non-rotatable wooden rod 3.

into which the prong portion 4 of the stamp-' ing is inserted, a coil torsion spring 5 having carrier-housing the,

' Further objects will appear the ole- Carrier Y z underneath the; arcuate flanged portions '22 the attachment of the coil torsion spring 5.

one end secured at 6 tothe wooden rod,-a pawl coilto'rsion spring i s"secured,apawl carrier'disk 8, secured between the mating'halves 9 and IQ andsaidhousing 'anda plurality of pawls '11, four in. number; pivotally mounted 5;? ,on-sa d pawl carrying member. Ifhe tater half 9 of the pawljcarrier housing has'a bear- 1ng-=open1ng 12 cooperating with a rounded hollow j ournal portion 13, formed on the sheet gnetalstamp ng. The pawlflcarrier housinggp v. ,1s secured {to the end of the 'woiodenshade 7 roller by vmeans of gca r ferrule l having a flange 15' which holds the h' ousing in'po'sition gtheedge of. the .capf o'r ferrule being orimped inwardly at 11 to bite mat n e wooden roller, and the p arts securely in 7 posit on, The'outejr end of thestampiiigjs I flatt ned't p i e erosi n 17 :fh agin the notch in, the usual shaderollerbracket. L

i i eip wl ay'be'ff ed of Wirejas towag in Fig. bentto provi'dean intermediate 1ournal portlonl8'journalled in an opening -19 in thefdisk-likei'jpawl carrier-8,1 and twopawl portions 20 lying on opposite sides of the pawl carrier and connected with ea'qh' .-.0ther by. aid journal port 0117,18. 'ljhe p w hasfour. arouate surfaces 21 which 'fit of the two valves 9 and 10 of the pawl'car- ,cesses flit formed j between"the aforesaid h We ie of. t 'housinsm y he secured together in any suitable manner as by means ofdo vetaihlugsf25 formed on;

one ofthe halves which my bepressegi down to. engage in.dovetail notohes26 jfo1fmed in" from oneofthe housing p'artsjto provid for "'That partiof' the. sheet meter-st mping Which cooperates with the pawl tofhold" the shade. roller against rotation comprises ah'o1-- low split drum-like structure 28 formed from two niatingfhalves and'liaving anpopening 95 c011 torsionspring by a tw o' point enga e disengaged from the holding drum accidentally as the shade roller would have to be rotated backwardly a substantial distance in order for the point of the pawl to be released from its engagement with theholding drum. The pawls are sov shaped that they can be threaded through the openings 19in the pawl carrier and then moved to a position in which the pawl portions straddle the pawl carrier so that when the housing members are assembled in position the pawls will also be held assembled on the pawl carrier. The operation is as follows:

If the shade is in lowered position and held as shown in Fig. 7. and it is desired to raise .theshade, the shade is first pulled down far enough to withdraw the pawl 11 from the opening in the retainingdrum 28 and the shade is then quickly released whereupon the coil torsion spring 5 will cause rapid rotation of the shade roller and centriingal force will cause the pawls 11 to fly outwardly to prevent their engagement with the retaining drum. To stop the shade in the desired position the movement of the shade is arrested to prevent centrifugal force from acting on p i the pawls tothrow them outwardly and the shade is allowed to roll slowly upward until the point of one of the pawls enters theopening in the holding drum and the parts are again held in theposition shown in Fig. 7.

The construction shown in Fig. 10 is substantially the same as that shown in Fig. 5 except that the bearing portion for the housing instead of being formed as an integral part of the sheet metal stamping is formed as a separate metal collar 31 which is slipped over the flattened end 17 of the sheet metal stamping.

While I have ments of my invention, it is obvious that many modifications therein may occur to those skilled in theart, and I desire. therefore, that my invention be limitedonly by the scope of the appended claims and by the prior art. 7

I claim:

1. A shaderoller construction comprising a roller, a pawl carrier secured to rotate therewith,- a pawl mounted on said carrier, said pawl carrier comprising a disk having an opening therethrough. said pawl being formed of wire shaped to provide a middle journal portion iournalled in said opening and two pawl portions lying on opposite sides of said diskand connected with each other by said journaled portion.

2. A shade roller construction comprising a roller, a pawl carrier, a pawl mounted on said carrler and housing means for sald pawl carrler and pawl, said pawl carrler comprlsdescribed but two embodi-.

member engageable with an intermediate portion of the pawl, and an abutment member engageable with the end portion of the pawl.

4:. A shade roller construction comprising a roller,'a pawl. secured to rotate with said roller, and means including a portion engageable with said pawl for holding said roller: against rotation comprising a drum memberhaving an opening through which the point of the pawl enters, the end of the pawl engaging the inside of the drum and an intermediate portion' of the pawl engaging the front edge of the opening to hold the roller against rotation.

In witness whereof, I have hereunto subscribed my nam e OHN K. TOMLINSGN. 

